21466127841 has 8 divisors (see below), whose sum is σ = 28630192800. Its totient is φ = 14306407392.

The previous prime is 21466127797. The next prime is 21466127843. The reversal of 21466127841 is 14872166412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21466127841 - 2²⁷ = 21331910113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21466127793 and 21466127802.

It is not an unprimeable number, because it can be changed into a prime (21466127843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074580 + ... + 1094373.

It is an arithmetic number, because the mean of its divisors is an integer number (3578774100).

Almost surely, 2^21466127841 is an apocalyptic number.

It is an amenable number.

21466127841 is a deficient number, since it is larger than the sum of its proper divisors (7164064959).

21466127841 is a wasteful number, since it uses less digits than its factorization.

21466127841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172255.

The product of its digits is 129024, while the sum is 42.

The spelling of 21466127841 in words is "twenty-one billion, four hundred sixty-six million, one hundred twenty-seven thousand, eight hundred forty-one".